Installing odb + a libodb-* package installs libodb twice

[Max13]

odb depends on libodb (no option needed), so installing odb will first install libodb without option (linked to the default C++ standard library depending on your OS X version).

Let's take libodb-sqlite: It depends on libodb but specifying a build option. Depending on something already installed with a different build option results in reinstalling it with the specified options.

To summarize, if you want to install odb and it's libodbs, you need to specify libodb at first and the right build option at the end, to make sure homebrew will install libodb once with the right options.

Example, you want to install odb + libodb-sqlite and use the Apple's libstdc++. If you do this:

% brew install odb libodb-sqlite --with-libstdc++

You'll see libodb installing because it's an odb dependency, then odb, then libodb again because build options are specified by libodb-sqlite (taken from the command line --with-* option)

For now, you should do:

% brew install libodb odb libodb-sqlite --with-libstdc++